Watson was canceled after two seasons, but the series is still saving one last jolt for the finish. In the penultimate episode of Season 2, Shinwell Johnson walked into the ER and found Sherlock Holmes on a gurney, rough-looking and confused.
The sight hit hard because Holmes had been treated as dead — and, before that, as a possible symptom of Dr. John Watson’s glioblastoma. Shinwell, who had been in the middle of a proposal from Nurse Carlin DaCosta when he was pulled away to the ER, stared at the man he thought he had lost and blurted, “My god.” When he asked, “Sherlock? Guv? Are you alright?” Holmes looked back and asked, “Do I know you?”
The exchange lands as the sharpest proof yet that the show is not just closing a case, but pressing on the fault line it opened earlier in the run: whether Holmes was ever really there at all, or whether Watson’s illness had blurred the line between memory and reality. The answer, at least in the latest episode, was unsettlingly concrete. Holmes was in the emergency room, and he did not seem to know Shinwell at all.
That twist now feeds directly into the series finale, titled “The Cobalt Fissure,” which is set to air Sunday, May 3 at 10/9c on CBS. The finale logline says a seemingly random murder outside UHOP sets the stage for the arrival of someone from Watson and Holmes’ past, and Eddie Izzard guest stars as Sebastian Moran. That gives the show one final chance to reconnect its biggest mysteries to a real-world threat before the season ends for good.
What makes the finale matter today is the collision of two endings at once: the show’s cancellation and the promise of one more reveal. After two seasons of questions about Holmes, Watson’s illness and the people caught in between, the series is heading into its last hour with a murder, a returning figure from the past and a man who may have just been found, but is far from understood.